HP Serviceguard Toolkit for NFS manual Supported Conﬁgurations

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Overview of Serviceguard NFS

Supported Conﬁgurations

Supported Conﬁgurations

Serviceguard NFS supports the following conﬁgurations:

•Simple failover from an active NFS server node to an idle NFS server node.

•Failover from one active NFS server node to another active NFS server node, where the adoptive node supports more than one NFS package after the failover.

•A host conﬁgured as an adoptive node for more than one NFS package. The host may also be prevented from adopting more than one failed package at a time.

•Cascading failover, where a package may have up to three adoptive nodes.

•Server-to-server cross mounting, where one server may mount another server’s ﬁle systems, and the mounts are not interrupted when one server fails.

These conﬁgurations are illustrated in the following sections.

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Chapter 1

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Contents Serviceguard NFS Toolkit A.11.11.04 Administrator’s Guide EditionLegal Notices Contents Index Figures Figures Overview of Serviceguard NFS Overview of Serviceguard NFS Limitations of Serviceguard NFS Overview of the NFS File Lock Migration Feature Overview of the NFS File Lock Migration Feature Supported Conﬁgurations Simple Failover to an Idle NFS Server Pkg1 disksFailover from One Active NFS Server to Another Pkg2 DisksHost Conﬁgured as Adoptive Node for Multiple PackagesCascading Failover with Three Adoptive Nodes Server-to-Server Cross Mounting NFS NFSSupported Conﬁgurations Starting the NFS Services How the Control and Monitor Scripts WorkStarting File Lock Migration Halting the NFS Services Monitoring the NFS Services On the Client Side Installing and Conﬁguring Installing and Conﬁguring Serviceguard NFS Installing Serviceguard NFS ReadmeCmmakepkg -p /opt/cmcluster/nfs/nfs.conf Monitoring NFS/TCP Services with Serviceguard NFS ToolkitMonitoring NFS/TCP Services with Serviceguard NFS Toolkit Before Creating a Serviceguard NFS Package NUMNFSD=10 Before Creating a Serviceguard NFS Package Mount -o nointr relocatableip/usr/src /usr/src Conﬁguring a Serviceguard NFS Package Copying the Template Files Editing the Control Script nfs.cntl IP0=15.13.114.243 SUBNET0=15.13.112.0 Lower Etc/hosts ﬁle Conﬁguring a Serviceguard NFS Package Editing the NFS Control Script hanfs.sh Netswitchingenabled Editing the File Lock Migration Script nfs.ﬂm Conﬁguring a Serviceguard NFS Package Editing the NFS Monitor Script nfs.mon Conﬁguring a Serviceguard NFS Package Editing the Package Conﬁguration File nfs.conf Conﬁguring a Serviceguard NFS Package Conﬁguring Server-to-Server Cross-Mounts Optional SNFS0=nfs1/hanfs/nfsu011CNFS0=/nfs/nfsu011 Conﬁguring a Serviceguard NFS Package Run the cluster using the following command cmruncl -v-f Conﬁguring a Serviceguard NFS Package Chapter Sample Conﬁgurations Sample Conﬁgurations Example One Three-Server Mutual Takeover Basil SageThree-Server Mutual Takeover after One Server Fails Cluster Conﬁguration File for Three-Server Mutual Takeover Package Conﬁguration File for pkg01 NFS Control Scripts for pkg01 Nfs.cntl Control ScriptPackage Conﬁguration File for pkg02 NFS Control Scripts for pkg02 Package Conﬁguration File for pkg03 NFS Control Scripts for pkg03 Example Two One Adoptive Node for Two Packages with File Lock MigrationSage Basil Pkg02 VOLUMEGROUP/dev/nfsu01 VOLUMEGROUP/dev/nfsu02 Package Conﬁguration File for pkg01 NFS Control Scripts for pkg01 Hanfs.sh Control Script NFS File Lock Migration and Monitor Scripts for pkg01 Nfs.ﬂm ScriptPackage Conﬁguration File for pkg02 NFS Control Scripts for pkg02 NFSFLMSCRIPT=$0%/*/nfs2.flm NFS File Lock Migration and Monitor Scripts for pkg02 Example Three Three-Server Cascading FailoverCascading Failover with Three Servers after One Server Fails VOLUMEGROUP/dev/nfsu01 VOLUMEGROUP/dev/nfsu02 Package Conﬁguration File for pkg01 NFS Control Scripts for pkg01 NODENAMEthyme NODENAMEsage NODENAMEbasil IP0=15.13.114.244 SUBNET0=15.13.112.0 Example Four Two Servers with NFS Cross-Mounts Thyme Basil Cluster Conﬁguration File for Two-Server NFS Cross-Mount NODENAMEthyme NODENAMEbasil NFS Control Scripts for pkg01 SNFS0=nfs1/hanfs/nfsu011 CNFS0=/nfs/nfsu011 NODENAMEbasil NODENAMEthyme NFS Control Scripts for pkg02 SNFS0=nfs2/hanfs/nfsu021 CNFS0=/nfs/nfsu021 Index Index Default values

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